Types of abstracts. There are two types of abstracts: descriptive and informative. They have different aims, so as a consequence they have different components and styles. There is also a third type called critical, but it is rarely used.
Samsung Galaxy Note 7 smartphone has been banned from all aircraft in the United States. The US Transportation Department and other agencies have banned passengers from carrying on the devices or putting them inside checked baggage during flights.
The new policies aren't always clear or consistent. For example, carry-on baggage â including most purses and laptop computers â is banned on all flights from Britain and on some flights from the U.S. to Britain. British Airways bans carry-on baggage from the U.S. to the U.K., but U.S. airlines do not.